Never gonna happen. Cash has no intrinsic value exccept maybe for use in fire / toiler paper. GPUs while currently inflated in price will always find enough value. Their price might go down 50-75% but never 99%
After GPU crypto mining became unprofitable Chinese manufacturers took "mining only" cards, desoldered the GPU and built new graphics cards using the chips.
So at least the lower end stuff (RTX6000) could be repurposed like that.